Electrical transmission or interconnection systems – Personnel safety or limit control features – Interlock
Patent
1975-01-31
1976-09-14
Miller, Jr., Stanley D.
Electrical transmission or interconnection systems
Personnel safety or limit control features
Interlock
307254, 307268, H03K 1700
Patent
active
039809013
ABSTRACT:
A trigger pulse generator circuit for converting an input pulse into a sharp pulse to be used as a trigger pulse is disclosed. The input pulse is applied to a first and a second switching means which are connected in cascade, the second switching means having a larger delay time than that of the first switching means. An output trigger pulse is derived from a connecting point of the first and second switching means. The first switching means becomes cut-off in response to the removal of the input pulse, while the second switching means becomes cut-off a predetermined time after the removal of the input pulse due to a time delay caused by the storage time of a transistor of the second switching means. In consequence, a sharp trigger pulse is derived from the output terminal. Preferably, a discharging means for the charge stored in the second switching means is further provided between the ground and the second switching means. This trigger pulse generator circuit is advantageous in that no capacitive element is necessitated, and so it is quite suitable for application to an integrated circuit.
REFERENCES:
patent: 3299290 (1967-01-01), Moll
patent: 3530313 (1970-09-01), Gassmann
patent: 3588544 (1971-06-01), Wallingford
patent: 3798471 (1974-03-01), Williams et al.
Davis B. P.
Miller, Jr. Stanley D.
Nippon Electric Company Ltd.
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